Search found 29 matches

by dr_Primus
Mon Dec 20, 2021 11:29 am
Forum: Help
Topic: Jamovi slows down (to a halt) when trying to perform PCA
Replies: 1
Views: 692

Jamovi slows down (to a halt) when trying to perform PCA

Can you help me with this please... I have a set of 20 patients (rows). Each of them was measured tooth enamel light absorbance and i have a table with absorbances for each wavelength (columns). We are talking around 4000 data cells for each patient. When I enter PCA and add those variables (wavelen...
by dr_Primus
Sat Mar 27, 2021 10:52 am
Forum: jamovi development
Topic: Want to buy a Macbook Air with M1 CPU... Will jamovi work?
Replies: 4
Views: 14957

Re: Want to buy a Macbook Air with M1 CPU... Will jamovi wor

Thanks for the answer... I also think that Apple are jerks (although Tim Cook is a much nicer guy than Steve Jobs... but he's not a revolutionary... just an extremely competent executive), but their products are pretty good... The switch to ARM architecture was pretty slick and improved battery life...
by dr_Primus
Wed Mar 10, 2021 11:45 am
Forum: jamovi development
Topic: Want to buy a Macbook Air with M1 CPU... Will jamovi work?
Replies: 4
Views: 14957

Want to buy a Macbook Air with M1 CPU... Will jamovi work?

So... The title is self explanatory ;)

How well does jamovi work? Is emulation fast enough? Or perhaps we'll see a ARM native version soon?

Thanks... Keep up the good work
by dr_Primus
Fri Oct 11, 2019 6:34 am
Forum: General
Topic: Improving ROC curves - Youden index
Replies: 20
Views: 26311

Re: Improving ROC curves - Youden index

Thanks... Found it. Really like it so far. If I find any bugs, will report it!
by dr_Primus
Wed Oct 09, 2019 6:16 pm
Forum: General
Topic: Improving ROC curves - Youden index
Replies: 20
Views: 26311

Re: Improving ROC curves - Youden index

Hey folks, the update has been pushed to jamovi. The DIF table error is gone, a crude DeLong test for differences between AUC's has been added, and the ability to combine ROC plots into a single image has been added. Please try it out and let me know your thoughts! Thanks! I just need to find it wh...
by dr_Primus
Sun Sep 22, 2019 8:06 pm
Forum: General
Topic: Improving ROC curves - Youden index
Replies: 20
Views: 26311

Re: Improving ROC curves - Youden index

Thanks for all the hard work!
by dr_Primus
Mon Sep 09, 2019 7:18 pm
Forum: General
Topic: Improving ROC curves - Youden index
Replies: 20
Views: 26311

Re: Improving ROC curves - Youden index

Wow! That looks great!
Thanks!
by dr_Primus
Sat Sep 07, 2019 12:47 pm
Forum: General
Topic: Improving ROC curves - Youden index
Replies: 20
Views: 26311

Re: Improving ROC curves - Youden index

And here is the website where I "steal" R code I need to get ROC curves I need


https://rpubs.com/Wangzf/pROC
by dr_Primus
Sat Sep 07, 2019 12:44 pm
Forum: General
Topic: Improving ROC curves - Youden index
Replies: 20
Views: 26311

Re: Improving ROC curves - Youden index

Of course... if you change col to ="#000000" lines will be black
by dr_Primus
Sat Sep 07, 2019 12:37 pm
Forum: General
Topic: Improving ROC curves - Youden index
Replies: 20
Views: 26311

Re: Improving ROC curves - Youden index

Hello guys This is the code that I used: To clarify: Volumen = name of the dataset that I used Responder = name of the response variable (0 or 1) CVP, PPV, PCWP, SVV = predictor variables (continuous) rocCVP <- roc (Volumen$Responder, Volumen$CVP, percent = TRUE) rocPPV <- roc (Volumen$Responder, Vo...